peters



4 2 Sheets--Sheet l..

Patented Oct. 19,1875.

w. num. Hauchway-Guard.v N0. 169,025.

w I L L r All@ M u In',v or' M o UNITED STATES l Specification forming'part ofietters Patent N o. 169,025, i i March 19,1875@ y To all whom it may concern:

Be it known that I', WILLIAM MUIR, of the city of Montreal, in the district of Montreal and Province of Quebec, Canada, have in- Avented certain new and useful Improif'ements in Hoistways; and I do hereby declare that the following is a full, clear, and exact description of the salile.

My invention has reference particularly to hoistways ill whicll the doors on the several oors act by slidiilg back, sidewise, or by swinging outward; aiid consists iii an apparatus hy which these doors are opened and closed bythe upward or dowliward passa-ge of the traveling cah or platform, the doors in each story heilig' kept closed, except when the platform is just below, at the level of, or at a short distance above, the tioor, thus entirely olivi-ating any chance of those acciden ts from falling down hoistways, which are now so common, and, by assuring the automatic closing of the doors, doing away with the objections to hoistways on account of the increased risk of lire from its communication from a lower story to the upper tlats.

For fuller comprehension of my invention, reference illust he had to the drawings llereunto annexed, in which similar letters of ret'- erence indicate like parts. and where- Figure l is a sectional elevatioli, looking toward the side, ot' a hoistway provided with sliding doors. Fin. 2 is a detail section, showilig the hoistway with the doors open. Fig. 3 is a similar section with the doors shut. Fig. 4 is a part plall ot' alloistway with doors opening outward, showing the doors shut. Fig. 5 is a modification with doors open. Fig. 6 is a vpart sectional elevation of the salue with doors shut. Fig. 7 is a part elevation of outside of the same showing doors open.

A A are the doors, aild B the framing of the well or hoistway, on the sides of which are placed, as shown in Figs. 1, 4, and 5, rocksliat'ts G G, carried in proper hearings D D, to the outer ends ot' these rock-shafts heilig secured levers E E, to he hereinafter more particularly alluded to. Arms F, forked at their free ends to receive rollers G, are firmly secured, as shown in Fie'. l, to the rock-shafts creek.

datedjOctober 19, application filed G. The ends of these arms F may, instead of heilig forked and furnished with rollers, he made rounded or beveled, so as to produce the same effect-4. c., the diminution of friction. H is the traveling cab or platform, operated by any ordinary power, alld having arranged on either side pieces I I, incliningl inward at both ends, and acting upon the rollers G, as will he hereinafter described. Where the doors ofthe lioistway are those which slide hack alid forth, the levers E E engage at their free ends with stops K K, secured. as shown in Figs. l, 2, and 3, to the doors A A, which ill this instance are iireferahly hung (hy means of straps and rollers) from the rail L, set with a fall inward. In hoistways where the doors opeli outward, an eye or hook is secured to the ends ot' the levers E, as shown in Figs. 6 alid 7, to which is loosely attached a rod or arm, M, fastened at its other end to an eye on the door A, hoth of these heilig hinged to the framing, as showil, or by any means which will allow the doorin opening to rise up, the lifting heilig effected by means of a roller, N, attached to each door, and ruilning, as it opells, upon a rail, O, forming the segment of a circle, and sloped up from its inner to its outer end.

The operation of lily invention is as follows: The doors ot' the-hoistway heilig closed, as in Figs. 3 and 5, and the respective parts in the positions there sliowu, the traveling platform H rises or descends until the iiiclilled pieces I come ill contact with the rollers Groll the elids of the levers, or their equivalents, pressilig them hack lliltil they are hroughtinto the positiolis shown in Figs. 2 and 7, thus raising the levers E, which, when the doors are those which slide, act upoli the stops K, and force the doors hack, holding tliein open as long as the pressure ofthe pieces I continues against the levers or arms F. As soon as this is withdrawn hy the further ascent or descent of the platform H, the weight of the doors causes thelii to run down the rails L and collie together, a strip of ilidia-rubber or other like suhstalice heilig provided to act as a butter. Where the doors swing outward, the levers E, in rising, act by means of the arms L upon nj noafefmig "them outward-fan they? ssumetheposition shown in Figs. 5 andf'7. As soon as the pressure on the rollers G or ends of the arms F is removed the doors run roundV on the curved rail O and come together, closing the hoistSvay.- opening;'-V It will be observed that the above devices, in addition to heilig very cheaply pnt up and perfectly efficient, can. be'appliedtoany hoist, by whatever power it may be Worked, and can be fixed in hoists already built Without in any wayfinterfering. \tvithexitstng arrangeinentg 1 do not claim any device for operating theV i traveling platform, or for regulating its motion, or for securing it in case of accidents; but

What l claim as my invention is as follows:`

lingplatforn'i1H,y andim'parting motion to the doors A of the hoistway, as and for the purvpose specified. t `Montreal,123dlday ,of ,I annary, A. 1).1875.

` i `WM. MUIR. Witnesses:

FBAS. HY. REYNOLDS S. J. KEER. 'f 

